Should I consider surgery? SLAP tear extending from superior posterior to anterior inferior labrum. Possible tear of middle glenohumeral ligament. Partial-thickness bursal surface supraspinatus tendon tear. Focal cartilaginous loss of glenoid.

Depends. SLAP tears in 40 year olds are often treated conservatively. However, if pain is an issue, then consideration for biceps tenodesis/SLAP repair can be entertained.
Yes. Yes. Surgery would be a consideration, particularly if your pain level is high and function poor and if you have failed nonoperative care such as physical therapy. It can be done arthroscopically and in general has a high success rate.!!